Questions

______ is not formally prescribed device available to members of parliament.

What does 'GIFT' stand for?

The World Braille Day is observed across the world every year on ______.

CIPAM is planning to launch a scheme for raising intellectual property rights awareness at a cost of Rs 29.7 crore. What does ‘C’ stand for in ‘CIPAM’?

Who among the following is not a member of any of the two houses of our country?

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best express the same sentence in Indirect/Direct speech.

The master asked the people why they prevented him from going near the tiger.

In the following question, a sentence has been given in Direct/Indirect speech . Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

He told me, "Your train will leave if you do not go at once."

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

The antigen-antibody immunological reaction is used to be regarded as typical of immunological responses. Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by and very often digested by macrophages and polymorphs. The process of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody; the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.

What are antibodies?